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  #1  
Old September 25th 2011, 21:31
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Mikey Mikey is offline
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Thanks for the comments.

Thanks panel, I have made a few steps back here and there to made things better, or improve their function. The water lines are a great example of an idea or design I really liked that proved to not to be the best.

Steve,
I did consider using 1-1/2" pipe for the coolant lines. I actually had 1-1/2" pipe from the start. But the original location of the coolant lines were simply not practical for the location of the engine coolant hoses and the radiator.
The original design was a pipe on each side of the tunnel.

Since the engine's coolant lines were only on the passenger side. The decision was made to just put the coolant lines on the passenger side.

Then I had to decide on a size. 1-1/2 seemed a little big to me. I asked around my work for opinions on the size of the coolant hose. I was under the assumtion that a larger pipe would have more volume but less pressure. So the smaller pipe 1" would have less volume but more pressure. I'm also counting on the coolant pipes under the car to act as a second radiator. That is why I welded the two together. I even placed rubber pads under the pipe to help hold the pipes off the chassis so air can circulate all the way around the pipes. The fact that 20AN fittings cost more than twice as much as 16AN fittings helped me choose 16AN. And given the restriciton in space under the chassis, 1" seemed to fit better. In the end my decision to use 16AN is a balance between, size, location, cost, and maybe a little trial and error to keep it interesting.

Sorry, I tried to make my answer to the point without missing many details.

New progress.
I had to reshoot the trunk, I used a late model bug master cylinder bowl bracket to hold the mc bowl. I used pop rivits to hold the bracket in place.

Another shot, I just set the tank in for the picture. It still needs refinishing.

I would have bleed the brakes today but I need brake light switches.

Thanks again for the comments. I'm really excited to get to drive this thing soon.
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'04 R32 Tornado Red
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  #2  
Old September 25th 2011, 22:08
Supa Ninja Supa Ninja is offline
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Looking good Mickey, lots of progress since I last checked your build
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  #3  
Old October 10th 2011, 14:50
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volkdent volkdent is offline
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It may work out ok, but I just wanted u to be aware of a possible cooling issue. U welded the hot and return lines together in an attempt to help cooling is what it sounds like u said. Unfortunately that's the reverse of what u accomplished, as cool side coolant returning to the engine from the rad will be heated by the hot coolant leaving the engine. I don't mean to rain on ur parade, and hopefully it works out ok, but it may have defeated some of the cooling potential of the system.

Jason

Quote:
Originally Posted by Mikey View Post
Thanks for the comments.

Thanks panel, I have made a few steps back here and there to made things better, or improve their function. The water lines are a great example of an idea or design I really liked that proved to not to be the best.

Steve,
I did consider using 1-1/2" pipe for the coolant lines. I actually had 1-1/2" pipe from the start. But the original location of the coolant lines were simply not practical for the location of the engine coolant hoses and the radiator.
The original design was a pipe on each side of the tunnel.

Since the engine's coolant lines were only on the passenger side. The decision was made to just put the coolant lines on the passenger side.

Then I had to decide on a size. 1-1/2 seemed a little big to me. I asked around my work for opinions on the size of the coolant hose. I was under the assumtion that a larger pipe would have more volume but less pressure. So the smaller pipe 1" would have less volume but more pressure. I'm also counting on the coolant pipes under the car to act as a second radiator. That is why I welded the two together. I even placed rubber pads under the pipe to help hold the pipes off the chassis so air can circulate all the way around the pipes. The fact that 20AN fittings cost more than twice as much as 16AN fittings helped me choose 16AN. And given the restriciton in space under the chassis, 1" seemed to fit better. In the end my decision to use 16AN is a balance between, size, location, cost, and maybe a little trial and error to keep it interesting.

Sorry, I tried to make my answer to the point without missing many details.

New progress.
I had to reshoot the trunk, I used a late model bug master cylinder bowl bracket to hold the mc bowl. I used pop rivits to hold the bracket in place.

Another shot, I just set the tank in for the picture. It still needs refinishing.

I would have bleed the brakes today but I need brake light switches.

Thanks again for the comments. I'm really excited to get to drive this thing soon.
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  #4  
Old October 10th 2011, 20:24
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Mikey Mikey is offline
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Well Jason, when you're right, you're right.

So, if the water lines were not attached and separated by some distance. My assumption would hold that the water lines would act like a radiator?

Hmmm, well played good sir. Well played.
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'64 Ghia - Project!!-Subaru EJ20T, MS/EDIS, 993 brakes, 914 Tranny...
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  #5  
Old October 11th 2011, 23:51
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volkdent volkdent is offline
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Quote:
Originally Posted by Mikey View Post
Well Jason, when you're right, you're right.

So, if the water lines were not attached and separated by some distance. My assumption would hold that the water lines would act like a radiator?

Hmmm, well played good sir. Well played.
Sorry man!!! Just didn't want you to scratch your head raw if things weren't working the way you planned. Yes, aluminum is great to diffuse heat, so it should be OK with the amount of coolant volume and the length of the runs. The key will be to make ABSOLUTELY sure you can bleed any high points, speaking from experience that will make more difference than almost anything else.

Jason
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Dyno Run
Oval Ragster-'57 Rag/'04 Boxster S
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